CAS number : 7727-54-0
Molecular weight :228.20
Molecular formula/chemical symbol : (NH4)2S2O8
Description :
Apearances: White crystal or powder. Odorless. Complete decomposition at 120 ° C, the long-term preservation does not decompose completely dry, not easy to absorb moisture, but gradually decompose to release oxygen and ozone absorb moisture. Heating break down oxygen to become (NH4) 2S2O7. Strong oxidants. Soluble in water, acidic aqueous solution. Gradual decomposition at room temperature, at higher temperatures decompose rapidly and release oxygen, and generates ammonium hydrogen sulfate.
USES :
Test and determination of manganese, iron and
steel, oxidant.
Report :
|
TEST ITEMS |
TEST RESULT |
|
|
|
(AR) |
(CP) |
|
(NH4)2S2O8 |
≥98.5 |
98.0 |
|
Clarity Test |
Qualified |
Qualified |
|
Water insoluble matter |
≤0.005 |
0.02 |
|
Residue on ignition (as sulphate) |
≤0.02 |
0.05 |
|
Chloride and chlorate (as Cl) |
≤0.001 |
0.002 |
|
Mn |
≤0.00005 |
0.0001 |
|
Fe |
≤0.0005 |
0.001 |
|
Heavy metals (as Pb) |
≤0.0005 |
0.001 |
